White Blank PVC Plastic Cards. I got 100 for less than $13 at amazon https://www.amazon.com/gp/product/B007M413BC.

I applied a little at a time and used the card to apply and then squeegee most of it off. With the fast hardener I will sand most of it off this afternoon and reapply. I always use the first application of epoxy to find areas that need more prep because it shows up flaws just like a finish.
I am surprised that I am really liking how the Osage Orange looks. Also I am told that it darkens with age.

Day 2
The epoxy seems fully cured in about five hours. So you can apply multiple coats in a day. The instructions say you have a 20 minute working time with the fast hardener which is plenty for me.
With this epoxy I wanted to try a new process for me where I come out of the pore fill with completely level surfaces and any required drop fills dealt with. I have gotten late into the finish process on guitars and have sanded through the finish, pore fill and\or the seal coat to wood when leveling the final finish. I am trying to avoid that.
So far the system 3 silverTip is easy to work with, it is clear not as thick as zpoxy, it does not seem to foam and I can leave on a very thin wetted coat.
This morning I leveled the finish with many sand throughs, checked for low areas. found a few places to drop fill and applied a second coat of epoxy.


About five hours later I used a sharp scraper and a razor blade to level the cured second coat. I found a couple of missed drop fills, which I fixed with gluboost this fit and finish CA and applied what I hope is my final coat of epoxy. I plan to repeat the above until I have a perfect coat as there is no harm at this point in the process of sanding through.
After I leveled th epoxy

with a fresh coat.

Day 3
Just to close this off using a utility blade and a scraper I scraped most of the epoxy off. I was close but still had a low spot in one of the sides, and there were a couple of places I sanded down on the back as I saw some scratches through the finish.
In any case I put one more very thin layer of epoxy down (I spread an amount about the size of a quarter across the entire back and use one of the plastic cards to scrap most of that off.)
About five hours later, I scraped a couple ridges and drips toward the edges off with a utility blade (it just peels off in a very even ribbon).
After I had it level to my eyes I used a 800P Wet and Dry paper with mineral spirits as a lubricant. Here were the results after wet sanding

I put on 3 or 4 wipes of diluted Seal Coat (really 1 lb shellac) and called the pore fill on the body done.

To close I could of done this in a long day (2 or 3 applications) if I had properly prepared the body for finish. I have a hard time seeing all the flaws even with a naptha wipe. They do show up after wet sanding the epoxy though.